公开(公告)号：US20180102089A1

公开(公告)日：2018-04-12

申请号：US15839497

申请日：2017-12-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seungho PARK ,  Baekwoon LEE

IPC: G09G3/3208 ,  G09G3/20

Abstract: An organic light emitting display apparatus includes a first data line, a comparator, and a data generator. The first data line is connected to a first pixel. The comparator compares first image data of input image data to at least one of a first critical grayscale value or a second critical grayscale value, where the first image data corresponds to the first pixel. The data generator determines the first critical grayscale value or the second critical grayscale value as first corrected image data when the first image data is equal to or greater than the first critical grayscale value but lower than the second critical grayscale value.

公开(公告)号：US20160171921A1

公开(公告)日：2016-06-16

申请号：US14922357

申请日：2015-10-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seungho PARK ,  Baekwoon LEE

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/3208 ,  G09G3/2055 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: An organic light emitting display apparatus includes a first data line, a comparator, and a data generator. The first data line is connected to a first pixel. The comparator compares first image data of input image data to at least one of a first critical grayscale value or a second critical grayscale value, where the first image data corresponds to the first pixel. The data generator determines the first critical grayscale value or the second critical grayscale value as first corrected image data when the first image data is equal to or greater than the first critical grayscale value but lower than the second critical grayscale value.

Abstract translation: 有机发光显示装置包括第一数据线，比较器和数据发生器。 第一数据线连接到第一像素。 比较器将输入图像数据的第一图像数据与第一临界灰度值或第二临界灰度值中的至少一个进行比较，其中第一图像数据对应于第一像素。 当第一图像数据等于或大于第一临界灰度值但低于第二临界灰度值时，数据生成器将第一关键灰度值或第二关键灰度值确定为第一校正图像数据。

公开(公告)号：US20230162670A1

公开(公告)日：2023-05-25

申请号：US17983462

申请日：2022-11-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sunghoon BANG ,  Seokgyu BAN ,  Dong-Ki EUN ,  Seungho PARK ,  Wook LEE

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2300/0842 ,  G09G2320/041 ,  G09G2310/061 ,  G09G2320/0271 ,  G09G2320/0257

Abstract: A display device including: a display panel including a plurality of pixels; a display panel driver configured to drive the display panel; a memory device configured to store a reference current-temperature model that is set for the display panel, a global offset of the display panel, which is calculated based on the reference current-temperature model in a manufacturing stage of the display panel, and a local offset of the display panel, which is calculated based on a characteristic difference between the pixels in the manufacturing stage; and a panel temperature determiner configured to measure sensing currents flowing through the pixels when a temperature sensing voltage is applied to the pixels, calculate correction sensing currents by applying the global offset and the local offset to the sensing currents, and determine temperatures of the pixels by substituting the correction sensing currents into the reference current-temperature model.

公开(公告)号：US20190279343A1

公开(公告)日：2019-09-12

申请号：US16286062

申请日：2019-02-26

Applicant: Samsung Display Co., Ltd.

Inventor： Jihye SHIN ,  Seonhaeng KIM ,  Seungho PARK

IPC: G06T5/00 ,  G09G5/10

Abstract: A method of performing an image-adaptive tone-mapping for a display device including performing a first tone-mapping on an image frame by applying a first tone-mapping function to respective non-target display blocks, and performing a second tone-mapping on the image frame by applying a second tone-mapping function obtained by applying a local weighted value to the first tone-mapping function to respective target display blocks.

公开(公告)号：US20190213956A1

公开(公告)日：2019-07-11

申请号：US16237814

申请日：2019-01-02

Applicant: Samsung Display Co., Ltd.

Inventor： Seungho PARK ,  Miyoung JOO

IPC: G09G3/3283 ,  H01L27/32

Abstract: A method of driving a display panel includes: grouping m adjacent pixels, which output same color light, into one pixel-group in the display panel, where m is an integer greater than or equal to two; determining whether a unit grayscale (UG) to be implemented by the pixel-group is greater than or equal to a determined reference grayscale (REFG) by analyzing respective data signals applied to the pixel-group; performing, in response to the UG being greater than or equal to the REFG, a normal driving that implements the UG by controlling all of the m adjacent pixels to emit light with first luminance corresponding to the respective data signals; and performing, in response to the UG being less than the REFG, a combination driving that implements the UG by controlling only a portion of the m adjacent pixels to emit light with second luminance that is greater than the first luminance.